[Proj] Distance calculations

[Christopher Barker]

I've got a question:

I understand how these issues can be academically interesting, but is 
there any practical difference?

Surely the ellipsoidal model of the earth is an approximation anyway -- 
how accurate is it, and are the difference between the various 
algorithms under discussion really larger than the error inherent in the 
ellipsoidal approximation?

Just wondering, it's the engineer in me.

-Chris


-- 
Christopher Barker, Ph.D.
Oceanographer

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Chris.Barker at noaa.gov